Changed the brake lights on my 1998 4Runner, but they still do not work.

If fuse 25 under the hood is good, you have a wiring issue. Are you getting power at the brake light switch? If yes, trace the wires from there to he rear of the truck. If not, trace forward to the fuse.

No idea here as this is one of them funny american cars with no seperate indicators but the brake light is the indicator as well,,so the brake light switch ? changed then maybe a bad ground on the back lights or the hazard warning light switch .

When you say you checked the fuse, are you getting power in and out of it and the brake light switch ?

feed supply problem somewhere ?but where ? try checking the wiring loom at the rear or as its called in american "pigs tails"

Try this push down on brake pedal while you push in or wiggle the hazard switch.If the brake lights come on then that means you turn signal switch is faulty.

does the high mounted brake light work? the brake switch has 2 contacts one for the high mount (LT BLUE/BLACK) and one for the tail brake lights. The tail/brake light wire is LIGHT BLUE. the main connector between the brake light switch and the tail lights is C208 which is located behind the rear seat, left side. So if there is power coming out of the brake switch OK and no power at the tail lights, check that connector. Hope this helps.

Does the brake light in the rear window work? If so, the brake light switch is good. Running lights all work?

sounds like the brake light switch at the brake pedal my need to be replaced

By the brake pedal is a brake light switch. replace that item

one of the wire of brake switch is disconnected from rear tail lamp, just run both wire of switch it it continued to end and not grounded any where, it will slove your problem.